Wikimedi'Òc

Early photo of Leaping Rock (Old Stone Face) (bf1cf028-e757-4b30-906c-c6bdf8187711).jpg - BMacZeroBot

Minnesota's Distribution of Exposed Crystalline Rocks.PNG - Bettymnz4

050819 TettegoucheStatePark HighFalls.jpg - Mono

Soudan Underground Mine SP IMG 1037 soudan red quartz.JPG - Bjoertvedt

Dolomitic Limestone Label.JPG - Amcyrus2012

Gabro sample.JPG - Amcyrus2012

Hematite (banded) label.JPG - Amcyrus2012

Hematite (banded).JPG - Amcyrus2012

Hematite Banded with Jasper student sample label.JPG - Amcyrus2012

Dolomitic Limestone student sample label.JPG - Amcyrus2012

Magnetite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Rt. 169 roadcut between Soudan & Robinson, Minnesota, USA) 1 (19035471992).jpg - Natuur12

Magnetite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Rt. 169 roadcut between Soudan & Robinson, Minnesota, USA) 10 (18420180123).jpg - Natuur12

Jaspilite (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Soudan Mine, Soudan, Minnesota, USA) 8 (19031176755).jpg - Natuur12

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Soudan Mine, Soudan, Minnesota, USA) 4 (18409457564).jpg - Natuur12

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Soudan Mine, Soudan, Minnesota, USA) 8 (18409399714).jpg - Natuur12

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Soudan Mine, Soudan, Minnesota, USA) 3 (19005789956).jpg - Natuur12

Agates - panoramio.jpg - Panoramio upload bot

Agate - panoramio.jpg - Panoramio upload bot

Agate - panoramio - Brandon Menth.jpg - Panoramio upload bot

Agate - panoramio - Brandon Menth (1).jpg - Panoramio upload bot

Hidden Falls - St Paul, MN - panoramio (44).jpg - Panoramio upload bot

Hidden Falls - St Paul, MN - panoramio (45).jpg - Panoramio upload bot

Blue Mounds State Park close.jpg - Kewlgrapes

Blue Mounds State Park outcrop.jpg - Kewlgrapes

Blue Miunds State Park cam.jpg - Kewlgrapes

The End Of The River.jpg - Chris.schiemann

Anorthosite xenolith (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Keene Creek East Skyline Parkway roadcut, Duluth, Minnesota, USA) 5 (22040450638).jpg - Ser Amantio di Nicolao